It's hard for succulents to get enough light indoors. Place them near a window that gets light all day, or the brightest spot you have.
Soak the roots, then let the soil dry out. Water again a few days after it's dry. Watering daily is the quickest way to kill them.
Succulents don't like sitting in soggy soil. Skip glass jars and terrariums, and use a pot with a drainage hole so the soil can dry out.
If your succulent starts stretching out and reaching, it's not getting enough light. Move it somewhere brighter to keep it compact.